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authorPaul Mundt <lethal@linux-sh.org>2011-03-17 16:44:08 +0900
committerPaul Mundt <lethal@linux-sh.org>2011-03-17 16:44:08 +0900
commit1d2a1959fe534279cf37aba20b08c24c20840e52 (patch)
tree67c0b9aa7fe22a44bf0b4af88947799203eb8f67 /arch/arm/include/asm/system.h
parent5a79ce76e9bb8f4b2cd8106ee36d15ee05013bcf (diff)
parent054cfaacf88865bff1dd58d305443d5d6c068a08 (diff)
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into sh-latest
Diffstat (limited to 'arch/arm/include/asm/system.h')
-rw-r--r--arch/arm/include/asm/system.h17
1 files changed, 9 insertions, 8 deletions
diff --git a/arch/arm/include/asm/system.h b/arch/arm/include/asm/system.h
index 97f6d60297d..9a87823642d 100644
--- a/arch/arm/include/asm/system.h
+++ b/arch/arm/include/asm/system.h
@@ -347,6 +347,7 @@ void cpu_idle_wait(void);
#include <asm-generic/cmpxchg-local.h>
#if __LINUX_ARM_ARCH__ < 6
+/* min ARCH < ARMv6 */
#ifdef CONFIG_SMP
#error "SMP is not supported on this platform"
@@ -365,7 +366,7 @@ void cpu_idle_wait(void);
#include <asm-generic/cmpxchg.h>
#endif
-#else /* __LINUX_ARM_ARCH__ >= 6 */
+#else /* min ARCH >= ARMv6 */
extern void __bad_cmpxchg(volatile void *ptr, int size);
@@ -379,7 +380,7 @@ static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
unsigned long oldval, res;
switch (size) {
-#ifdef CONFIG_CPU_32v6K
+#ifndef CONFIG_CPU_V6 /* min ARCH >= ARMv6K */
case 1:
do {
asm volatile("@ __cmpxchg1\n"
@@ -404,7 +405,7 @@ static inline unsigned long __cmpxchg(volatile void *ptr, unsigned long old,
: "memory", "cc");
} while (res);
break;
-#endif /* CONFIG_CPU_32v6K */
+#endif
case 4:
do {
asm volatile("@ __cmpxchg4\n"
@@ -450,12 +451,12 @@ static inline unsigned long __cmpxchg_local(volatile void *ptr,
unsigned long ret;
switch (size) {
-#ifndef CONFIG_CPU_32v6K
+#ifdef CONFIG_CPU_V6 /* min ARCH == ARMv6 */
case 1:
case 2:
ret = __cmpxchg_local_generic(ptr, old, new, size);
break;
-#endif /* !CONFIG_CPU_32v6K */
+#endif
default:
ret = __cmpxchg(ptr, old, new, size);
}
@@ -469,7 +470,7 @@ static inline unsigned long __cmpxchg_local(volatile void *ptr,
(unsigned long)(n), \
sizeof(*(ptr))))
-#ifdef CONFIG_CPU_32v6K
+#ifndef CONFIG_CPU_V6 /* min ARCH >= ARMv6K */
/*
* Note : ARMv7-M (currently unsupported by Linux) does not support
@@ -524,11 +525,11 @@ static inline unsigned long long __cmpxchg64_mb(volatile void *ptr,
(unsigned long long)(o), \
(unsigned long long)(n)))
-#else /* !CONFIG_CPU_32v6K */
+#else /* min ARCH = ARMv6 */
#define cmpxchg64_local(ptr, o, n) __cmpxchg64_local_generic((ptr), (o), (n))
-#endif /* CONFIG_CPU_32v6K */
+#endif
#endif /* __LINUX_ARM_ARCH__ >= 6 */